Boo's favorite No toy is his Poppa.

He loves to chew on DH.
Gracie Ruth's is toothpicks or paper. She'll even go so far as to get on the end table and pull a new kleenex out of the box to shred.
Yogi's is any toy that Gracie Ruth is currently chewing on. It doesn't matter that he has to walk by the exact same toy to get to G to steal her toy, he wants the one that is currently in her mouth.